package com.heima.wemedia.service.impl;

import com.alibaba.fastjson.JSONArray;
import com.heima.apis.client.IArticleClient;
import com.heima.baidu.response_entity.CheckResponse;
import com.heima.baidu.service.BaiDuService;
import com.heima.common.tess4j.Tess4jClient;
import com.heima.file.service.FileStorageService;
import com.heima.model.common.article.dto.ArticleDto;
import com.heima.model.common.constants.WemediaCHeckContants;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.wemedia.pojos.WmChannel;
import com.heima.model.common.wemedia.pojos.WmNews;
import com.heima.model.common.wemedia.pojos.WmUser;
import com.heima.wemedia.mapper.WmChannelMapper;
import com.heima.wemedia.mapper.WmNewsMapper;
import com.heima.wemedia.mapper.WmUserMapper;
import com.heima.wemedia.service.WmNewsAutoScanService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.util.*;
import java.util.stream.Collectors;


@Service
@Slf4j
@Transactional
public class WmNewsAutoScanServiceImpl implements WmNewsAutoScanService {
    @Autowired
    private Tess4jClient tess4jClient;

    @Autowired
    private WmNewsMapper wmNewsMapper;

    @Autowired
    private IArticleClient articleClient;

    @Autowired
    private WmChannelMapper wmChannelMapper;

    @Autowired
    private WmUserMapper wmUserMapper;

    @Autowired
    private FileStorageService fileStorageService;

    @Autowired
    private BaiDuService baiDuService;

    /**
     * 自媒体文章审核
     *
     * @param id 自媒体文章id
     */
    @Override
    @Async  //标明当前方法是一个异步方法
    public void autoScanWmNews(Integer id) {
        //1.查询自媒体文章
        WmNews wmNews = wmNewsMapper.selectById(id);
        if (wmNews == null) {
            throw new RuntimeException("WmNewsAutoScanServiceImpl-文章不存在");
        }

        if (wmNews.getStatus().equals(WmNews.Status.SUBMIT.getCode())) {
            //从内容中提取纯文本内容和图片
            Map<String, Object> textAndImages = handleTextAndImages(wmNews);

            //2.审核文本内容
            boolean isTextScan = handleTextScan((String) textAndImages.get("content"), wmNews);
            if (!isTextScan) return;

            //3.审核图片
            boolean isImageScan = handleImageScan((List<String>) textAndImages.get("images"), wmNews);
            if (!isImageScan) return;

            //4.审核成功，保存app端的相关的文章数据
            ResponseResult responseResult = saveAppArticle(wmNews);
            if (!responseResult.getCode().equals(200)) {
                throw new RuntimeException("WmNewsAutoScanServiceImpl-文章审核，保存app端相关文章数据失败");
            }
            //回填article_id
            wmNews.setArticleId((Long) responseResult.getData());
            updateWmNews(wmNews, (short) 9, "审核成功");

        }
    }

    /**
     * 保存app端相关的文章数据
     *
     * @param wmNews
     */
    private ResponseResult saveAppArticle(WmNews wmNews) {

        ArticleDto dto = new ArticleDto();
        //属性的拷贝
        BeanUtils.copyProperties(wmNews, dto);
        //文章的布局
        dto.setLayout(wmNews.getType());
        //频道
        WmChannel wmChannel = wmChannelMapper.selectById(wmNews.getChannelId());
        if (wmChannel != null) {
            dto.setChannelName(wmChannel.getName());
        }

        //作者
        dto.setAuthorId(wmNews.getUserId().longValue());
        WmUser wmUser = wmUserMapper.selectById(wmNews.getUserId());
        if (wmUser != null) {
            dto.setAuthorName(wmUser.getName());
        }

        //设置文章id
        if (wmNews.getArticleId() != null) {
            dto.setId(wmNews.getArticleId());
        }
        dto.setCreatedTime(new Date());

        ResponseResult responseResult = articleClient.saveArticle(dto);
        return responseResult;

    }

    /**
     * 审核图片
     *
     * @param images
     * @param wmNews
     * @return
     */
    private boolean handleImageScan(List<String> images, WmNews wmNews) {
        if (images == null) {
            return true;
        }
        boolean flag = true;
        if (images == null || images.size() == 0) {
            return flag;
        }
        //下载图片 minIO
        //图片去重
        images = images.stream().distinct().collect(Collectors.toList());
        //审核图片
        try {
            for (String image : images) {
                byte[] bytes = fileStorageService.downLoadFile(image);
                //图片识别文字审核---begin-----
                //从byte[]转换为butteredImage
                ByteArrayInputStream in = new ByteArrayInputStream(bytes);
                BufferedImage imageFile = ImageIO.read(in);
                //识别图片的文字
                String result = tess4jClient.doOCR(imageFile);
                //审核是否包含自管理的敏感词
                flag = handleTextScan(result, wmNews);
                if (!flag) {
                    return flag;
                }
                CheckResponse checkResponse = baiDuService.checkImage(image);
                flag = doTextAndImageResponse(wmNews, flag, checkResponse);
                if (!flag) break;
            }
        } catch (Exception e) {
            flag = false;
            e.printStackTrace();
        }
        return flag;
    }

    /**
     * 审核纯文本内容
     *
     * @param content
     * @param wmNews
     * @return
     */
    private boolean handleTextScan(String content, WmNews wmNews) {
        boolean flag = true;
        if ((wmNews.getTitle() + "-" + content).length() == 0) {
            return true;
        }
        try {
            CheckResponse checkResponse = baiDuService.checkText(wmNews.getTitle() + "-" + content);
            log.info("审核文字的响应：{}", checkResponse);
            flag = doTextAndImageResponse(wmNews, flag, checkResponse);
        } catch (Exception e) {
            flag = false;
            e.printStackTrace();
        }
        return flag;
    }

    private boolean doTextAndImageResponse(WmNews wmNews, boolean flag, CheckResponse checkResponse) {
        System.out.println(checkResponse);
        Integer errorCode = checkResponse.getErrorCode();
        if (errorCode != null) {
            flag = false;
            updateWmNews(wmNews, (short) 3, "审核失败");
            return flag;
        }
        if (checkResponse.getConclusionType() == WemediaCHeckContants.CHECK_ERRO) {
            flag = false;
            updateWmNews(wmNews, (short) 2, "当前文章中存在违规内容");
            return flag;
        }
        if (checkResponse.getConclusionType() == WemediaCHeckContants.CHECK_LIKE) {
            flag = false;
            updateWmNews(wmNews, (short) 3, "人工审核");
            return flag;
        }
        updateWmNews(wmNews, (short) 9, "审核成功");
        return flag;
    }

    /**
     * 修改文章内容
     *
     * @param wmNews
     * @param status
     * @param reason
     */
    private void updateWmNews(WmNews wmNews, short status, String reason) {
        wmNews.setStatus(status);
        wmNews.setReason(reason);
        wmNewsMapper.updateById(wmNews);
    }

    /**
     * 1。从自媒体文章的内容中提取文本和图片
     * 2.提取文章的封面图片
     *
     * @param wmNews
     * @return
     */
    private Map<String, Object> handleTextAndImages(WmNews wmNews) {

        //存储纯文本内容
        StringBuilder stringBuilder = new StringBuilder();

        List<String> images = new ArrayList<>();

        //1。从自媒体文章的内容中提取文本和图片
        if (StringUtils.isNotBlank(wmNews.getContent())) {
            List<Map> maps = JSONArray.parseArray(wmNews.getContent(), Map.class);
            for (Map map : maps) {
                if (map.get("type").equals("text")) {
                    stringBuilder.append(map.get("value"));
                }

                if (map.get("type").equals("image")) {
                    images.add((String) map.get("value"));
                }
            }
        }
        //2.提取文章的封面图片
        if (StringUtils.isNotBlank(wmNews.getImages())) {
            String[] split = wmNews.getImages().split(",");
            images.addAll(Arrays.asList(split));
        }

        Map<String, Object> resultMap = new HashMap<>();
        resultMap.put("content", stringBuilder.toString());
        resultMap.put("images", images);
        return resultMap;

    }
}